Battery enables for typical usage also when the power is out. Timer-to-close feature can instantly close the garage door after 1, 5, or 10 minutes. Motion discovering control board allows very easy programming of remote controls, keypads, as well as myq lights devices, and also turns lights on immediately when motion is sensed. As added ease showcases the opener has a timer-to-close function that will immediately shut the garage door in case you fail to remember, and myq technology that allows your garage door opener to instantly regulate interior and/or exterior lights (with purchase of additional myq devices) so you will never come house to a dark home again. The opener likewise includes smooth start as well as smooth deter to decrease the sound of the garage door as it opens up as well as shuts best for houses with a space over the garage. 3/4 hps dc belt drive system for the utmost in silent efficiency. Vehicle force-sensing technology constantly keeps an eye on garage door opener system and readjusts pressures to temperature changes. Quick-install rail system offers faster as well as much easier installment. Chamberlain whisper drive garage door opener with myq technologynow when the power goes out, your garage door opener will still work. The chamberlain whisper drive with myq modern technology and also battery back-up allows you complete usage of your garage during a power failure. The security as well as safety features will proceed to run as well, guaranteeing your family members is shielded in a power failure. See also: http://garagedooropenerpro.com/chamberlain/chamberlain-wd962kev-whisper-drive-garage-door-review/